Blasting-powder.



" UNITEDsTA srATENT OFFICE.

'HARVEY D. FARRIS AND AUSTIN-G." OF WETASKIWIN, ALBERTA, CANADA BLAsriNe-PownER.

Specification of Letters Patent,

Patented-Tune 23, 1908. e

. Application filed December 10, 1906. Serial No. 347,216;

Tc all may concern:

.Be it known that we, HARVEY D. FARRIS and AUSTIN" (l'JEx, subjects of the King'of .and

Great Britain, residing at Wetaskiwin, Al;- bertaj-Canada, have mvented certain nev'v seful Im rovements in Blasting-Pow;

' der, of which t e following is'a specification.

Our invention relates to animprove'ment in blasting powder and its superiority over other blasting powders resides'in the fact that 1 it is thoroughly safe to handle as it is impossible to explode by concussion while in a magazine or in large quantities.

A furher object is. to provide a powder which will burn without damage, being almost smokeless when fired ina me.

'- The following are the ingredients used for blasting rock or any substance requiring high explosives, to wit: chlorate of otash 66 lbs, wheat flour 33 lbs., picric aci 1 ounce.

These ingredients are thoroughly mixed with 1 allon of water so as to make a mechanical mixture and this productwhen in a, damp state is granulated and dried.

A coating' c'onsisting of the following ingredients may be'used, namely nitric. acid 1% ounces, muriatic acid 1 ounce, coal oil 1 gallon.

a fuse or a cap and electric spark.

Having thus described our invention, what we claim as new and desire to secure by LettersjPatent, is I i I '1. An-explosive consisting of granules of intimate dry mixture of chlorate of pot-. 40 ash, wheat flour,and 'icricj acid, all "in the proportions substantia y as set forth.

2. An explosive consistingof granules of an intimate mixture of chlorate of povv 45 ules havinga coating thereon consistin of I ash, wheat flour and picric' acid, saidgrannitric acid, muriatic acid and coal oil, a lJin the proportions substantially as set forth.

In testimonywhereof, we hereunto affix our signatures in presence of two witnesses. 50

' HARVEY D. FARRIS.

AUSTIN O..JEX.

Witnesses:

J. K. BURGESS, ALF. W." Jxman.

losive and also adds to its efiective- 3 

